BMW Thermostats for BMW 1 Series

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BMW thermostats are known to fail, but luckily they typically fail wide open - meaning that your car can still cool. We offer thermostats from various OE suppliers we trust along with upgraded motorsport specific thermostats where applicable to make sure your BMW stays cool on track.
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Water Pump And Thermostat Kit - BMW N52 3.0L
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Packaged by Turner - Corporate Logo
T#:17073598
Part#: 11537549476KT
In Stock
Sale - Save 25% $ 424.99

This product was last offered at the strikethrough price on
05-03-2026

$ 318.83 USD
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$ 424.99

This product was last offered at the strikethrough price on
05-03-2026

$ 318.83 USD
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Includes everything you may need to replace your water pump and thermostat.
BMW N54 N55 S55 Mosselman Thermostat Installation Kit
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Packaged by Turner - Corporate Logo
T#:4799665
Part#: THERMINSTALLKT
In Stock
Sale - Save 6% $ 22.99

This product was last offered at the strikethrough price on
06-15-2026

$ 21.64 USD
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Sale - Save 6%
$ 22.99

This product was last offered at the strikethrough price on
06-15-2026

$ 21.64 USD
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BMW N54 N55 S55 Mosselman Thermostat Installation Kit is designed to ensure a seamless installation of the Mosselman thermostat on BMW engines. This comprehensive kit from Turner Motorsport includes all necessary gaskets and components, guaranteeing a reliable and precise installation for optimal engine performance.

  • Complete Kit: Includes all essential gaskets and components required for a hassle-free thermostat installation.
  • Optimal Performance: Ensures proper installation of the Mosselman thermostat, leading to improved engine cooling efficiency and performance.
  • High-Quality Components: Gaskets and parts are manufactured to meet high standards of durability and reliability.
  • Precision Fit: Engineered to match OEM specifications, providing a perfect fit and reliable performance.
  • Ease of Installation: All necessary parts are included, simplifying the installation process and reducing the need for additional purchases.

Upgrade your BMW's cooling system with the Mosselman Thermostat Installation Kit from Turner Motorsport, ensuring a top-quality, reliable setup for your engine.

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Performance Water Pump And Thermostat Kit
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Packaged by Turner - Corporate Logo
T#:15710799
Part#: 11517632426-KT
Ships on Aug 11, 2026
Sale - Save 20% $ 514.99

This product was last offered at the strikethrough price on
05-03-2026

$ 410.34 USD
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Sale - Save 20%
$ 514.99

This product was last offered at the strikethrough price on
05-03-2026

$ 410.34 USD
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The stock thermostat is designed to open at 97C. This leaves your engine running fairly hot, and running for quite awhile before your thermostat will begin operation. With the Mishimoto Racing thermostat, the activation temperature becomes 74C. That's 23C cooler, meaning you can rest easy knowing your engine will stay cooler to help avoid all the problems that can be associated with an engine running hot. The water pumps in these BMW models are known for failure near 80,000 miles is a very common issue often times leaving the owner stranded. This kit provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road. Mishimoto Racing thermostat Bavarian Autosport water pump Genuine BMW coolant Mounting hardware required for both the thermostat and water pump
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Thermostat Installation Kit with Thermostat - N54, N55, S55
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Packaged by Turner - Corporate Logo
T#:55353595
Part#: OTN54.T85KT3
In Stock
New Item
$ 390.23 USD
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High oil temperatures are the ultimate enemy of your engine's longevity and performance. If you want to keep pushing your BMW to the limit you need to manage the heat.

Cooling System Refresh Kit - Level 2 - E9x, E82, E88, Z4
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Packaged by Turner - Corporate Logo
T#:42099868
Part#: 11537558523TKT
Back Ordered
Sale - Save 19% $ 829.99

This product was last offered at the strikethrough price on
05-03-2026

$ 671.07 USD
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Sale - Save 19%
$ 829.99

This product was last offered at the strikethrough price on
05-03-2026

$ 671.07 USD
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Keep your BMW running at the proper temperature and avoid costly engine repairs with the Cooling System Refresh Kit, the complete maintenance solution trusted by enthusiasts and professionals alike.
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Thermostat
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Bremmen Parts - Corporate Logo
T#:15511826
Part#: 11537549476
In Stock
Sale - Save 18% $ 84.99

This product was last offered at the strikethrough price on
05-03-2026

$ 69.99 USD
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Sale - Save 18%
$ 84.99

This product was last offered at the strikethrough price on
05-03-2026

$ 69.99 USD
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Overheating your N52 or N54 engine can be detrimental to the longevity of your engine. We also recommend replacing your hardware 07119903851 x2

ECS Billet Cylinder Head Outlet Hose Adapter - BMW N52 N54 N55 3.0L N...
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ECS - Corporate Logo
T#:556105
Part#: 024797ECS01
In Stock
Sale - Save 25% $ 76.99

This product was last offered at the strikethrough price on
06-14-2026

$ 57.74 USD
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Sale - Save 25%
$ 76.99

This product was last offered at the strikethrough price on
06-14-2026

$ 57.74 USD
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Some of the biggest issues when owning a BMW can come from cooling system components. Even through years of improvement, the same failure is seen with the plastic fittings and adapters from years of hot to cold temperature fluctuation. The N52/N54/N55/N20 engine sees failure at the plastic cylinder head outlet adapter connecting the cylinder head to the thermostat hose. The stock plastic adapter simply shears off at the end of the barbed fitting, creating a massive coolant leak. The engineering team at ECS Tuning decided a billet aluminum piece was a much better option to contend with the temperature fluctuation. Since other offerings on the market want you to modify your OE hose to be reused, they even developed a silicone replacement hose. These 2 pieces can be purchased separately if you decide to reuse your existing OE hose or in a package kit together for a single click upgrade. Features: Manufactured from billet 6061-T6 with type III anodized for exceptional durability and corrosion resistance. Much stronger part than OEM plastic ​​Will not become brittle and fatigued over time due to thermal cycling. This will prevent the part from breaking during removal and re-installation. Follows OEM form for perfect fitment. Utilizes (and includes) OEM O-ring 11537545278 to ensure a proper seal. Recommended clamp size is 25-40mm
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ECS Aluminized Silicone Water Pump Hose V2.0 - - E9x E8x E6x N52 N54...
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ECS - Corporate Logo
T#:640062
Part#: 008286LA01
In Stock
Sale - Save 25% $ 106.99

This product was last offered at the strikethrough price on
06-14-2026

$ 80.24 USD
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Sale - Save 25%
$ 106.99

This product was last offered at the strikethrough price on
06-14-2026

$ 80.24 USD
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When it comes to cooling system hose replacement, the "U" shaped hose connecting the water pump to the thermostat is usually the first to fail. A lot of this comes from its close proximity to the hot downpipes, while some of this failure comes from the sharp bends in the hose. 

Why not upgrade when you're due for a replacement? The ECS Tuning silicone hose replacement fixes these issue with two key features in their design. Offering this hose in a much more heat resistant silicone instead of OE rubber and having the hose wrapped in aluminum. The aluminum coating acts as a heat shield to further protect the silicone as well as reducing the temperatures forced on the coolant running through the hose. 

Replaces OE hose #11537545665

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Mosselman Billet Oil Thermostat With Installation Kit
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Mosselman Turbosystems - Corporate Logo
T#:27338734
Part#: OTN54.T85KT
Ships in 1-2 days
$ 433.99 USD
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The N54 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned.
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URO Thermostat - E60, E61, E82, E83, E88, E90, E91, E92, E93, Z4 ...
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URO - Corporate Logo
T#:591812
Part#: 11537549476
In Stock
$ 74.99 USD
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Restore proper function to your cooling system
Thermostat
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Bremmen Parts - Corporate Logo
T#:26538316
Part#: 11537601158
In Stock
Sale - Save 20% $ 95.99

This product was last offered at the strikethrough price on
05-03-2026

$ 76.70 USD
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Sale - Save 20%
$ 95.99

This product was last offered at the strikethrough price on
05-03-2026

$ 76.70 USD
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URO Parts Thermostat Assembly - 11537601158
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:29466802
Part#: 11537601158
Ships in 1 Business Day
$ 78.00 USD
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If your vehicle is struggling with cooling problems, the thermostat might be to blame. Symptoms such as extended warm-up times on the highway due to a thermostat stuck open or persistent overheating from a thermostat stuck closed can significantly impact performance and damage critical engine components.

Fortunately, URO Parts provides an exceptional replacement solution. Their high-quality thermostat is designed to match the functionality of the original factory unit, ensuring your vehicle operates at the correct temperature once again.

Key Features:

Guaranteed Fit: Designed for perfect compatibility, ensuring a hassle-free installation. Efficient Cooling: OE-style high-flow design promotes optimal engine cooling performance. Easy Installation: The thermostat housing assembly matches factory dimensions for quick bolt-on installation and secure hose connections. Comprehensive Compatibility: Includes ports for temperature sensors where necessary. Durable Construction: Made from high-quality alloy or composite materials that resist warping and cracking, preventing coolant leaks. URO Parts offers an extensive range of over 8,000 premium spare parts, specializing in replacements for factory BMW components. Their commitment to excellence is reflected in their meticulous manufacturing standards, focusing on precision, durability, and value. For reliable and affordable replacement parts, trust URO Parts to keep your vehicle running smoothly.

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Low Temperature Thermostat - 97C
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Bremmen Parts - Corporate Logo
T#:33612901
Part#: 11537601158-97C
In Stock
Sale - Save 20% $ 95.99

This product was last offered at the strikethrough price on
05-03-2026

$ 76.70 USD
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Sale - Save 20%
$ 95.99

This product was last offered at the strikethrough price on
05-03-2026

$ 76.70 USD
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Thermostat
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Gates - Corporate Logo
T#:393494
Part#: 11537601158
Ships on Jul 28, 2026
$ 108.99 USD
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Coolant Thermostat
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Meyle - Corporate Logo
T#:55461389
Part#: 11537549476
Special Order: No Guaranteed ETA
New Item
$ 81.99 USD
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This Meyle coolant thermostat provides a refresh for your thermal management system, keeping your engine operating exactly where the engineers intended.